These are the brushes I cannot work without-
Face:
187- Great for sheer, even application of liquid, cream, and powder products.
182- Excellent for blending
Eyes:
213- I use this to pack shadow on lids
217- BEST blending brush EVER
224- Good for crease work, but inferior to the 217 in terms of blending. I also use this to apply loose powder on top of concealer under the eyes
219- Essential for sexy, dramatic smoky eyes. Also great for blending shadow into the bottom lashline
209- The only brush I really use for eyeliner. It's rare that I use the 266 or 263. The 209 is the easiest to use of the three, and is versatile in that it can create a super thin line as well as thicker, more dramatic ones.
208- I use this to fill in brows. Perfect size and stiffness.
275- Super fluffy; excellent for blending and applying highlights to the browbone.
242- I almost forgot about this one. I use it to apply my cream colour base.